| Author |
Message |
    
tim barrett
New member
Username: timodessa
Post Number: 1
Registered: 11-2007
| | Posted on Sunday, November 11, 2007 - 06:59 pm: | 
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I need to find the lowest hp rating for my 671 straight natural aspirated engine.does anyone have any info for this? |
MARVIN PIERCE
Advanced Member
Username: marv
Post Number: 196
Registered: 09-2001
| | Posted on Sunday, November 11, 2007 - 07:12 pm: |
|
HP 252@2300 FOR PLEASURE CRAFT.N70 INJ. |
tim barrett
New member
Username: timodessa
Post Number: 2
Registered: 11-2007
| | Posted on Monday, November 12, 2007 - 03:09 am: |
|
thanks marvin.Im trying to get a rating of 165hp.Is there an "A" rating for commercial applications.could lowering the injector size decrease the hp. |
MARVIN PIERCE
Advanced Member
Username: marv
Post Number: 198
Registered: 09-2001
| | Posted on Monday, November 12, 2007 - 01:27 pm: |
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how about 174hp@1800 rpm,use n55 inj. |
tim barrett
New member
Username: timodessa
Post Number: 3
Registered: 11-2007
| | Posted on Monday, November 12, 2007 - 04:27 pm: |
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thats getting closer.is the inj. swap simple as switching inj. or does the engine need to be recalibrated or the timing changed? |
MARVIN PIERCE
Advanced Member
Username: marv
Post Number: 199
Registered: 09-2001
| | Posted on Wednesday, November 14, 2007 - 12:27 pm: |
|
REPLACE INJ AND TUNE UP. |
tim barrett
Member
Username: timodessa
Post Number: 4
Registered: 11-2007
| | Posted on Tuesday, November 20, 2007 - 05:49 pm: |
|
thanks marvin.Just started using this detroit which is different from my other engine (cummings ) and just found out that the engine has been rebiult 300hrs. ago. |
